What few Christian and Jewish records as exist tell a different story of violent persecution, enslavement, and severe discrimination on the basis of religion
It took an additional almost 800 years to drive the invaders out of Europe and Spain. The Eastward march of Islam, combined with the conquest of the holy lands of the Middle East by Seljuk Turks, prompted Pope Urban II to call for the first Crusade to strike at the heart of the Islamic invasion based in Jerusalem. The hope was that if the head were cut off, the body would die.
Now Spain is experiencing its second Islamic invasion. Just as before, tens of thousands of invaders are pouring across the Mediterranean from Morocco in North Africa. Spanish authorities, just as before, seem powerless to stop them. The second occupation of Spain has started.
It is said that history is written by the winners. Islamic records report that Spain during the time of the Islamic Occupation was peaceful, prosperous, and a time when Muslims, Christians, and Jews lived together in harmony. What few Christian and Jewish records as exist tell a different story of violent persecution, enslavement, and severe discrimination on the basis of religion. We may never know the true story of what happened in Spain during those years, but judging by histories from other regions conquered by Islam as well as modern experience, it likely wasn't pretty.
One lesson Islam has learned well is that conquest by armies is destructive and expensive. For an ideology that asserts its superiority and its right to take from those who do not subscribe to Islam, wars are wasteful of good booty. Far better to conquer by colonization and migration, and by seduction of the gullible with promises that they, too, will share in the wealth of conquest and will enjoy the peace and plenty that Islam provides.